• CCDB - Link (19.8.2022)
• Flora Gallica (2014), S.135
• Flora Iberica (2007), S.62 - Link (19.8.2022)
• Flora Italiana - Link (19.8.2022)
• Flora of North America - Link (19.8.2022)
• Hess (1976ff), Bd. 3, S.207
• Pignatti (1982), Vol.3, Nr.4542
• Tela Botanica - Link (19.8.2022)
• Wang (2010) - Link (19.8.2022)
• World Flora Online - Link (14.8.2022)

Foto: https://commons.wikimedia.org/wiki/File:Najas_gracillima.JPG